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Darina [25.2K]
3 years ago
9

Identify the mean of each distribution.

Mathematics
2 answers:
Setler [38]3 years ago
6 0

Answer:

Distribution A : 50

Distribution B : 100

Distribution C : 200

Second part is : B,C,A

Step-by-step explanation:

Alex787 [66]3 years ago
5 0

Answer:

50, 100, 200 and part 2 is b,c,a

Step-by-step explanation:

e2020

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Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. Find the probability that a randomly s
GaryK [48]

Answer:

The bill size can be considered usual.

Step-by-step explanation:

Mean (μ) = $108.43

Standard deviation (σ) = $36.98

Now, consider the distribution to be normal distribution :

P(Z=\frac{X-\mu}{\sigma}>\frac{a-\mu}{\sigma})=P(Z>\frac{173-108.43}{36.98})\\\\\implies P(Z>1.75)

Now, finding values of z-score from the table. We get,

P(Z > 1.75) = 0.9599

⇒ 95.99%

So, only 4.01 % of the people in the city wastes water.

Hence, the bill size can be considered usual.

6 0
3 years ago
Read 2 more answers
I need the answer to this problem please help me
LekaFEV [45]
I'm pretty sure both B and C equal 12 as well
Since the triangle equals 180 and the angels are all congruent
7 0
3 years ago
Sadie wants to paint 2 boxes. The paint costs $0.02 cents per square cm. If she throws the lids away, how much will it cost to p
Alex

Answer:

how many square centimeters is the box??

Step-by-step explanation:

8 0
2 years ago
A rectangular field on a farm is to be fenced in using the wall of the barn for one side and 200 meters of fencing for the other
vitfil [10]

Answer:

Rectangular area as a function of x :   A(x)  = 200*x  + 2*x²

A(max) = 5000 m²

Dimensions:

x = 50 m

l  = 100 m

Step-by-step explanation:

"x" is the length of the perpendicular side to the wall of the rectangular area to be fenced, and we call "l" the other side (parallel to the wall of the barn) then:

A(r) = x* l     and the perimeter of the rectangular shape is

P = 2*x + 2*l   but we won´t use any fencing material along the wll of the barn therefore

P  =  2*x + l       ⇒   200 = 2*x  + l      ⇒   l  = 200 - 2*x      (1)

And the rectangular area as a function of x is:

A(x)  = x * ( 200 - 2*x)  ⇒  A(x)  = 200*x  + 2*x²

Taking derivatives on both sides of the equation we get:

A´(x)  =  200 - 4*x     ⇒   A´= 0

Then    200 - 4*x  = 0     ⇒   4*x =  200   ⇒  x  = 50 m

We find the l value, plugging the value of x in equation (1)

l  = 200 - 2*x     ⇒ l = 200 - 2*50   ⇒  l = 100  m

A(max)  =  100*50

A(max)  = 5000 m²

3 0
3 years ago
X to the 2nd power minus 6 equals 1
alexandr402 [8]

Answer:

2.646

Step-by-step explanation:

You have to 6 to the 1 and then take the square root of the number which is seven leaving you with 2.646

3 0
2 years ago
Read 2 more answers
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